River Environment Classification (REC) - WRC


File ID: 2E571E0E-EEE6-4F07-AE0C-5A7F57A4D8DD
Hierarchy Level: dataset
Abstract: The REC organises information about the physical characteristics of rivers, including catchment climate, topography, geology and land cover. The REC system is a synthetic river network derived from a hydrologically correct digital elevation model.
Statement: The Ministry for the Environment (MfE) River Environment Classification (REC) v1 data set, supplied by NIWA, contains two primary vector features – one linear feature depicting watercourse and one area feature depicting watershed. These have been modified by Waikato Regional Council (WRC), and have provided the basis for a number of derived layers created by WRC to support ongoing business requirements. The WRC derived REC (v1) layers include: named lake and named watercourse layers that combine the REC network with NZTopo50 lake and river names, a centroid layer which offers alternative analysis options, and a pre built river catchment layer. Other layers have also been derived using FWENZ data and additional NIWA supplied data. The REC data has a wide range of applications. Refer to the REC User Guide (EWDOCS# 973680) for examples of how the REC is being used. There are a number of related attribute data sets that have been derived based on the REC network, for example, Freshwater Environments of New Zealand (FWENZ). Any non-spatial attribute based datasets will use the REACH_ID (or NZREACH) as the unique join data column. The REC_WATERCOURSE_NAMED and REC_LAKE_NAMED layers are intended for general purpose planning and mapping where the REC network is required to represent a known river or stream. Note that an equivalent catchments layer has not been created from the named rivers due to the complexity that would result – such a layer would create performance problems in GIS. Instead users are recommended to use the REC Tracer tool (available with all GeoMedia Professional installs) to create catchments as needed from the downstream reach of the desired waterways. The NIWA/MfE REC data was released under Creative Commons Licensing as per the NZGoal Framework (confirmed by WRC 28/02/2014). These WRC modified REC layers have been created and released under CC BY 3.0 NZ. More information, including the REC v1 User Guide, is available from MfE - https://www.mfe.govt.nz/environmental-reporting/about-environmental-reporting/classification-systems/fresh-water.html The REC v2 Data is available for download from NIWA - http://www.niwa.co.nz/freshwater-and-estuaries/management-tools/river-environment-classification-0
Keywords: Download,Hydrology,REC,River,Stream,Watercourse,Watershed
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 31/07/2014
Metadata URL: https://data.waikatoregion.govt.nz:8443/ords/f?p=140:12:0::NO::P12_METADATA_ID:240

Responsible Parties

Role: resourceProvider
Position:
Organisation: NIWA
Delivery Point: 301 Evans Bay Parade, Hataitai
City: Wellington
Postal Code:
Country:
Phone:
Fax:
Email:
Role: custodian
Position: Team Leader - Spatial Information and Data Management
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:

Metadata

Language: English
Character Set: utf8
Standard: ANZLIC
Standard Version: 1.1

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Download Links

URLFormatNotes

Supporting Information Links

URLFormatNotes

General Notes:

SCIENCE.sdeadmin.REC2P5_WATERSHED

 
File Identifier: D8168304-779C-5D3E-E055-000000000001 Parent Identifier: 2E571E0E-EEE6-4F07-AE0C-5A7F57A4D8DD
Hierarchy Level: feature Hierarchy Level Name:Feature of River Environment Classification (REC) - WRC
Abstract: The River Environment Classification (REC) is a database of catchment spatial attributes, summarised for every segment in New Zealand's network of rivers.
Statement: The attributes were compiled for the purposes of river classification, while the river network description has been used to underpin models. This layer is a polygon layer of watershed catchments. It is a subset layer of watersheds in the Waikato region.
Other Information: REC User Guide : http://discover.wairc.govt.nz/otcs/llisapi.dll?func=ll&objaction=overview&objid=1105336
Keywords: REC,Water,Watershed
Topic Category: environment:environmental resources, protection and conservation
inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 16/02/2022

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: asNeeded
Last Load Date: 17/02/2022

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southBoundLatitude : 5645771.3721
northBoundLatitude : 5964408.8349

Responsible Parties

Role: processor
Position:
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:
Role: resourceProvider
Position:
Organisation: NIWA
Delivery Point: 301 Evans Bay Parade, Hataitai
City: Wellington
Postal Code:
Country:
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : copyright
Data Use Constraints: copyright
Data Distribution: Unrestricted
Licence Type : Creative Commons Attribution 4.0 International (CC BY 4.0)
Licence: https://creativecommons.org/licenses/by/4.0/
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2022. WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”
Data Use Limits :

Download Links

URLFormatNotes

Supporting Information Links

URLFormatNotes
 https://niwa.co.nz/freshwater-and-estuaries/management-tools/river-environment-classification-0 HTML Source data link

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
HYDROID N N
NZSEGMENT N N
NZREACH_REC1 N N
AREA N N
OBJECTID N Y
GEOMETRY N N

SCIENCE.sdeadmin.REC2_WATERCOURSE

 
File Identifier: 7F873FD9-3011-316E-E055-000000000001 Parent Identifier: 2E571E0E-EEE6-4F07-AE0C-5A7F57A4D8DD
Hierarchy Level: feature Hierarchy Level Name:Feature of River Environment Classification (REC) - WRC
Abstract: Watercourses in the Waikato Region derived from NIWA's REC2 Database.
Statement: The River Environment Classification (REC) is a database of catchment spatial attributes, summarised for every segment in New Zealand's network of rivers. The attributes were compiled for the purposes of river classification, while the river network description has been used to underpin models.
Other Information: REC User Guide : http://discover.wairc.govt.nz/otcs/llisapi.dll?func=ll&objaction=overview&objid=1105336
Keywords: Catchment,Hydrology,Navigation,REC,Watercourse
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 16/01/2019

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: asNeeded
Last Load Date: 17/01/2019

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eastBoundLongitude : 1739868.4215
southBoundLatitude : 5646311.7823
northBoundLatitude : 5964212.0224

Responsible Parties

Role: resourceProvider
Position:
Organisation: NIWA
Delivery Point: 301 Evans Bay Parade, Hataitai
City: Wellington
Postal Code:
Country:
Phone:
Fax:
Email:
Role: processor
Position:
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : trademark
Data Use Constraints: copyright
Data Distribution: Unrestricted
Licence Type : Creative Commons Attribution 4.0 International (CC BY 4.0)
Licence: https://creativecommons.org/licenses/by/4.0/
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2020. WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”
Data Use Limits :

Download Links

URLFormatNotes

Supporting Information Links

URLFormatNotes
 https://niwa.co.nz/freshwater/management-tools/river-environment-classification-0 HTML NIWA - REC2 - River Environment Classification v2.0

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
NZSEGMENT N N
NZREACH_REC1 N N
NZFNODE N N
NZTNODE N N
WTRCRS_M N N
ID N Y
GEOMETRY N N

SCIENCE.sdeadmin.REC_CATCHMENT

 
File Identifier: D70C2496-3981-4CBE-A323-4EF2D6B86E24 Parent Identifier: 2E571E0E-EEE6-4F07-AE0C-5A7F57A4D8DD
Hierarchy Level: feature Hierarchy Level Name:feature of River Environment Classification (REC) - WRC
Abstract: Pre-built hydrological catchments tagged with the catchment name where known. Created from REC1.
Statement: * The Ministry for the Environment (MfE) River Environment Classification (REC) v1 data set, supplied by NIWA, contains two primary vector features – one linear feature depicting watercourse and one area feature depicting watershed. These have been modified by Waikato Regional Council (WRC), and have provided the basis for a number of derived layers created by WRC to support ongoing business requirements. *GIS_ALL.REC_CATCHMENT: pre-built hydrological catchments tagged with the catchment name where known. The attribute LEVEL_I_NAME contains single catchments traced upstream from their marine outlet. LEVEL_II_NAME catchments are generally level I catchments which can be amalgamated to compose harbour or estuarine catchments. LEVEL_III_NAME catchments comprise large inland catchments that overlap either level I or II catchments such as the Waipa River Catchment and Lake Taupo Catchment. * Creation Workflow: Created a feature class containing marine outlet reaches for every REC WATERCOURSE throughout the Region using SQL. Exported the REACH_ID values to a text file (789 outlet reaches). Formatted the exported REACH_ID data for multiple reach input into the REC TRACER application to and performed an upstream trace to create 789 river network feature classes. Exported the river networks to MapInfo and created a script to build catchment features for each hydrological network and append the results into a single GIS feature. Added three text attributes (LEVEL_I_NAME, LEVEL_II_NAME and LEVEL_III_NAME to hold the catchment names. Populated the level I attribute by transferring name data from the feature class GIS_ALL.HYD_50K_RIVER_NAMED, these names were later corrected (July 2008) to fix some spelling mistakes. Added attribute OUTPUT_REACH (Text) which is the outlet reach of the catchments defined in terms of REC REACH_ID. Selected groups of level I catchments representing estuarine catchments and populated the LEVEL_II_NAME attribute with the estuary name. Individually traced catchments representing larger inland catchments that overlap level I and II catchments such as the Waipa River, Karapiro to Taupo Gates, Lake Taupo catchments and appended these to the catchment layer. Normalised the geometry to a location precision of 1mm and ran geometry cleaning tools.
Other Information: *Data Quality: The basis of the REC system (v1) is a synthetic river network derived from a hydrologically corrected digital elevation model. The DEM used was built at a 30m-pixel size by NIWA using 20m contour data from the NZMS260 map series. The DEM was then hydrologically corrected using the river lines from the NZMS260 maps as a guide. The river lines themselves had been manually corrected by hand by NIWA based on expert advice from representatives from every regional authority. *Attribute Accuracy: Each of the key REC attributes was obtained through different processing methods. Refer to the REC User Guide pdf (DOC# 973680) for detailed explanation. *Completeness: The original RECv1 supplied data is complete for the whole of New Zealand. *Logical Consistency: The REACH_ID of each watercourse segment matches the REACH_ID of it’s equivalent watershed. Each watercourse has a NZTNODE (to node) and NZFNODE (from node) attribute. This can be imagined as a unique set of numbers for watercourse intersections, running downstream. E.g. a NZTNODE value for an upstream segment will be the same as the NZFNODE of the immediate downstream segment. Using this logic we are able to trace upstream and downstream from any watercourse segment. See EWDOCS# 1056230 for further detailed information about using the REC Tracer Application developed for WRC’s Oracle REC dataset.
Keywords: Catchment,Download,REC,River,Stream,Waikato Data Portal,Watershed,Waterway
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 17/02/2010

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: notPlanned
Last Load Date: 12/07/2013

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Recommended Scale:
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westBoundLongitude : 1907263.28
eastBoundLongitude : 1739844.885
southBoundLatitude : 5645902.884
northBoundLatitude : 5961211.564

Responsible Parties

Role: author
Position: Team Leader - Spatial Information and Data Management
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:
Role: resourceProvider
Position:
Organisation: NIWA
Delivery Point: 301 Evans Bay Parade, Hataitai
City: Wellington
Postal Code:
Country:
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : license
Data Use Constraints: license
Data Distribution: Unrestricted
Licence Type : Creative Commons Attribution 4.0 International (CC BY 4.0)
Licence: https://creativecommons.org/licenses/by/4.0/
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2004 . WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”
Data Use Limits :

Download Links

URLFormatNotes
 86d0092d20244012a41a100044568feb Download @ Waikato Data Portal

Supporting Information Links

URLFormatNotes

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
GEOMETRY N N
OUTLET_REACH N N
LEVEL_I_NAME N N
LEVEL_II_NAME N N
LEVEL_III_NAME N N
SOURCE N N
AREA_HA N N
PERIMETER_M N N
ID N Y

SCIENCE.sdeadmin.REC_CENTROID

 
File Identifier: E439EEBA-5F0D-4EB2-9DD7-F3BCA1042B17 Parent Identifier: E22C7CD3-C76D-48CE-BB12-92060A95C7E7
Hierarchy Level: feature Hierarchy Level Name:feature of River Environment Classification (REC) - WRC
Abstract: This is a geo-centroid created from each REC1 Watershed polygon.
Statement: This is a geo-centroid created from each RECv1 Watershed polygon. At time of creation it was given just the REACH_ID and DISTSEA_M attributes but more can easily be added. It was created solely to provide additional analysis options over and above the REC linear and polygon features. It was created using the oracle spatial function sdo_aggr_centroid.
Other Information:
Keywords: Catchment,Download,REC,Waikato Data Portal,Watercourse,Watershed
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 23/08/2011

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: notPlanned
Last Load Date: 23/08/2011

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Recommended Scale:
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Spatial Representation Type: vector

VectorGridGeographic Bounding Box
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westBoundLongitude : 1906698.5821
eastBoundLongitude : 1740531.9835
southBoundLatitude : 5646597.3255
northBoundLatitude : 5964177.2604

Responsible Parties

Role: author
Position: GIS and Data Management Team Leader
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : license
Data Use Constraints: license
Data Distribution: Unrestricted
Licence Type : Creative Commons Attribution 4.0 International (CC BY 4.0)
Licence: https://creativecommons.org/licenses/by/4.0/
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2004 . WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”
Data Use Limits :

Download Links

URLFormatNotes
 8088e9ba8c8e410186f6ef4a3d3064a4 Download @ Waikato Data Portal

Supporting Information Links

URLFormatNotes

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
GEOMETRY N N
REACH_ID N N
DISTSEA_M N N
OUTLET_REACH N N
LEVEL_I_NAME N N
LEVEL_II_NAME N N
LEVEL_III_NAME N N
ID N N

SCIENCE.sdeadmin.REC_LAKE_NAMED

 
File Identifier: 2E83B710-1EEF-4416-ADAF-657F95FFE6C8 Parent Identifier: E22C7CD3-C76D-48CE-BB12-92060A95C7E7
Hierarchy Level: feature Hierarchy Level Name:feature of River Environment Classification (REC) - WRC
Abstract: To be used together with REC_WATERCOURSE_NAMED this layer includes all lakes that comprise a watercourse with rivers and streams in REC_WATERCOURSE_NAMED. Created from REC1.
Statement: Created by WRC during the creation of REC_WATERCOURSE_NAMED in order to represent a logically complete water course from headwater to outlet. Uses NZTopo50 hydro geometries and REC_WATERCOURSE_NAMED (REC + NZTop50 + derived) attributes. Specifically, it includes lakes that these rivers and streams flow into and/or which flow into rivers and streams. The result is that the FLOWS_INTO attribute of each REC_WATERCOURSE_NAMED should be represented by either another feature in REC_WATERCOURSE_NAMED or in REC_LAKE_NAMED.
Other Information:
Keywords: Download,Lake,REC,Waikato Data Portal
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 17/12/2012

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: notPlanned
Last Load Date: 07/12/2012

Spatial Representation Information

Recommended Scale:
Reference System: EPSG2193
Spatial Representation Type: vector

VectorGridGeographic Bounding Box
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geometricObjectCount : 88
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Number of Dimensions : 2
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westBoundLongitude : 1895230.1381
eastBoundLongitude : 1748442.3843
southBoundLatitude : 5657358.6281
northBoundLatitude : 5896059.4153

Responsible Parties

Role: author
Position: GIS and Data Management Team Leader
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : license
Data Use Constraints: license
Data Distribution: Unrestricted
Licence Type : Creative Commons Attribution 4.0 International (CC BY 4.0)
Licence: https://creativecommons.org/licenses/by/4.0/
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2004 . WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”
Data Use Limits : Note that this is not (yet) designed as a definitive lakes layer.

Download Links

URLFormatNotes
 c5cd8c8f57b444538d6c8011be3c8c59 Download @ Waikato Data Portal

Supporting Information Links

URLFormatNotes

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
WATERWAY_NAME NZTopo50 name of lake N N
CODE Unique code (see REC_WATERCOURSE_NAMED) of the river/stream immediately downstream of the lake N N
FLOWS_INTO name of the river/stream that the lake flows into This is particularly useful to differentiate between waterways of the same name and can also be used to identify and locate waterways within parent systems. N N
LAKE_AREA_HA Total area in hectares of the lake N N
DOWNSTREAM_REACH NZ reach value of the REC reach immediately downstream of the lake N N
MIN_DISTSEA_M minimum distance to sea of this waterway (inherited from the REC downstream reach) N N
COMMENTS Additional information about this lake N N
ID unique numeric identifier N Y
GEOMETRY N N

SCIENCE.sdeadmin.REC_WATERCOURSE

 
File Identifier: AA958F98-AA29-4E61-938D-2892584B6B2D Parent Identifier: 2E571E0E-EEE6-4F07-AE0C-5A7F57A4D8DD
Hierarchy Level: feature Hierarchy Level Name:Feature River Environment Classification (REC) - WRC
Abstract: Watercourses within the Waikato Region created from NIWA's REC 1 Database.
Statement: The newer WRC REC 2 Watercourse layer - SCIENCE.sdeadmin.REC2_WATERCOURSE
Other Information: REC User Guide : http://discover.wairc.govt.nz/otcs/llisapi.dll?func=ll&objaction=overview&objid=1105336
Keywords: Water,Watercourse
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 02/12/2019

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: notPlanned
Last Load Date: 22/12/2018

Spatial Representation Information

Recommended Scale:
Reference System: EPSG2193
Spatial Representation Type: vector

VectorGridGeographic Bounding Box
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westBoundLongitude : 1906671.48
eastBoundLongitude : 1739889.871
southBoundLatitude : 5646338.276
northBoundLatitude : 5960926.975

Responsible Parties

Role: resourceProvider
Position:
Organisation: NIWA
Delivery Point: 301 Evans Bay Parade, Hataitai
City: Wellington
Postal Code:
Country:
Phone:
Fax:
Email:
Role: processor
Position:
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : copyright
Data Use Constraints: copyright
Data Distribution: Unrestricted
Licence Type : CC BY 4.0
Licence: https://creativecommons.org/licenses/by/4.0
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2018 . WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.
Data Use Limits :

Download Links

URLFormatNotes

Supporting Information Links

URLFormatNotes

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
REACH_ID N N
NZREACH N N
NZFNODE N N
NZTNODE N N
CATCHAREA_M2 N N
DISTSEA_M N N
LENGTH_M N N
SPRING N N
STM_ORDER N N
TAUPO_REACH N N
CLIMATE N N
SRC_OF_FLW N N
GEOLOGY N N
LANDCOVER N N
NET_POSN N N
VLY_LNDFRM N N
CSOF N N
CSOFG N N
CSOFGL N N
CSOFGLNP N N
CSOFGLNPVL N N
GEOMETRY N N
US_LENGTH_M N N
LC_UP_UNMOD_M2 N N
LC_UP_AREA_M2 N N
LC_UP_UNMOD_PERC N N
PAST_UP_CODE N N
ID N N

SCIENCE.sdeadmin.REC_WATERCOURSE_NAMED

 
File Identifier: F4B56A9F-EB2E-4872-92EF-44074AC05471 Parent Identifier: E22C7CD3-C76D-48CE-BB12-92060A95C7E7
Hierarchy Level: feature Hierarchy Level Name:Feature of River Environment Classification (REC) - WRC
Abstract: This layer is a definitive named and numbered set of waterways using REC1 spatial data to depict every named stream and river present on the NZTopo50 map series within Waikato Region.
Statement: Names are adopted from NZTopo50; numbers are adapted from the historic Rivers of New Zealand numbering system (additional digits were added in order to uniquely define every named parent/child waterway). NIWA had provided a non-spatial list of named REC reaches which proved to be incomplete and contained some errors. Similarly the historic Rivers of New Zealand data proved very limited so was enhanced during a manual matching process of these inputs against the topographic data. The end result is a linear data layer of REC waterways (each stream or river created from all reaches comprising the uniquely defined waterway).
Other Information: REC User Guide : http://discover.wairc.govt.nz/otcs/llisapi.dll?func=ll&objaction=overview&objid=1105336
Keywords: Download,REC,River,Stream,Waikato Data Portal,Watercourse,Waterway
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 11/01/2012

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: asNeeded
Last Load Date: 11/01/2012

Spatial Representation Information

Recommended Scale:
Reference System: EPSG2193
Spatial Representation Type: vector

VectorGridGeographic Bounding Box
GeometricObjectType : curve
geometricObjectCount : 1711
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Number of Dimensions : 2
Cell Geometry :
Transformation Param Available : N
westBoundLongitude : 1906192.401
eastBoundLongitude : 1739889.871
southBoundLatitude : 5647083.302
northBoundLatitude : 5960926.975

Responsible Parties

Role:
Position:
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : license
Data Use Constraints: license
Data Distribution: Unrestricted
Licence Type : Creative Commons Attribution 4.0 International (CC BY 4.0)
Licence: https://creativecommons.org/licenses/by/4.0/
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2012 . WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”
Data Use Limits :

Download Links

URLFormatNotes
 a8211793c5ce4fd3bedf0d68acd49b19 Download @ Waikato Data Portal

Supporting Information Links

URLFormatNotes

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
WATERWAY_NAME NZTopo50 name or river or stream non-unique because names can occur multiple times across the region N N
CODE Unique code adapted from historic Rivers of NZ numbering system A major river will have its own unique base number and tributaries of that will share the base number and have a unique numerical suffix. For example Awakino River has code = 409_0000; Awanui Stream, which flows into Awakino R has code = 409_0100 (tributaries of Awanui Stream will start numbering at 409_0110 and so on). N N
FLOWS_INTO name of the waterway that this one flows into This is particularly useful to differentiate between waterways of the same name and can also be used to identify and locate waterways within parent systems. N N
WATERWAY_LENGTH_M Total length in metres of the waterway N N
DOWNSTREAM_REACH NZ reach value of the downstream REC reach forming this waterway N N
UPSTREAM_REACH NZ reach value of the upstream REC reach forming this waterway N N
MIN_DISTSEA_M minimum distance to sea of this waterway (inherited from the REC downstream reach) N N
MAX_DISTSEA_M maximum distance to sea of this waterway (inherited from the REC upstream reach) N N
COASTAL_OUTLET a flag indicating if this waterway outlets directly to the coast; a “Y” indicates it does; a null value indicates it does not N N
COMMENTS Additional information about this waterway e.g. Waitakaruru River (090_0000) has a comment “Includes Waitakaruru Canal” N N
ID unique numeric identifier N Y
GEOMETRY N N

SCIENCE.sdeadmin.REC_WATERSHED

 
File Identifier: D615F42F-01C8-4750-AF26-3C87ACDBEA08 Parent Identifier: 2E571E0E-EEE6-4F07-AE0C-5A7F57A4D8DD
Hierarchy Level: feature Hierarchy Level Name:feature of River Environment Classification (REC) - WRC
Abstract: WRC modified REC v1 watersheds
Statement: Removed all nodes (vertices) where the angle between the incoming line and outgoing line was ~180° i.e. nodes on a straight line. The Geomedia Simplification Tool was used, with variables set as Tolerance = 0.005m, Distance – 0.005m and Method = Douglas-Pueker. This reduced total number nodes by ~50%, which dramatically improves performance – 56% quicker to load. Discontiguous watersheds (those with the same REACH_ID value) were merged. Summed AREA and PERIMETER values for merged geometries. Added a column TAUPO_REACH. Updated to ‘Y’ where REACH_ID = REC_WATERCOURSE.REACH_ID and REC_WATERCOURSE.TAUPO_REACH = ‘Y’. Other data modifications – made the REACH_ID column the primary key; renamed AREA as AREA_M2 and PERIMETER as PERIMETER_M; removed the GRIDCODE column.
Other Information:
Keywords: Catchment,REC,Watershed
Topic Category: inlandWaters:inland water features, drainage systems and their characteristics
Resource Reference Date: 17/02/2010

Metadata Constraints

Access Constraints: copyright
Use Constraints: copyright

Maintenance Information

Maintenance frequency: notPlanned
Last Load Date: 25/03/2005

Spatial Representation Information

Recommended Scale:
Reference System: EPSG2193
Spatial Representation Type: vector

VectorGridGeographic Bounding Box
GeometricObjectType : surface
geometricObjectCount : 50809
topologyLevel : geometryOnly
Number of Dimensions :
Cell Geometry :
Transformation Param Available : N
westBoundLongitude : 1907263.276
eastBoundLongitude : 1739844.886
southBoundLatitude : 5645902.879
northBoundLatitude : 5964478.935

Responsible Parties

Role: processor
Position: GIS and Data Management Team Leader
Organisation: Waikato Regional Council
Delivery Point: 160 Ward Street
City: Hamilton Central
Postal Code: 3204
Country: New Zealand
Phone:
Fax:
Email:

Data Constraints

Data Access Constraints : license
Data Use Constraints: license
Data Distribution: Unrestricted
Licence Type : Creative Commons Attribution 4.0 International (CC BY 4.0)
Licence: https://creativecommons.org/licenses/by/4.0/
Licence Expiry:
Licence Conditions:
Copyright : Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
© Waikato Regional Council 2004 . WRC REC Catchment/ Watercourse/ Watershed. Data derived from NIWA, MfE, LINZ – Copyright Reserved. Licensed under CC BY 4.0.
Data Disclaimers : The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you.”
Data Use Limits :

Download Links

URLFormatNotes

Supporting Information Links

URLFormatNotes

General Notes:

Attribute Information

NameDescriptionNotesRestrictedPrimary Key
REACH_ID N N
GEOMETRY N N
AREA_M N N
PERIMETER_M N N
NZREACH N N
TAUPO_REACH N N